./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float12_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c82214860fee184bc373305d606fd208dd65fd42 ..................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c82214860fee184bc373305d606fd208dd65fd42 ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 15:44:04,325 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:44:04,327 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:44:04,335 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:44:04,335 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:44:04,336 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:44:04,337 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:44:04,338 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:44:04,339 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:44:04,340 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:44:04,341 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:44:04,341 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:44:04,341 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:44:04,342 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:44:04,343 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:44:04,343 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:44:04,344 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:44:04,345 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:44:04,347 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:44:04,348 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:44:04,348 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:44:04,349 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:44:04,351 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:44:04,351 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:44:04,351 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:44:04,352 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:44:04,352 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:44:04,353 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:44:04,354 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:44:04,354 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:44:04,354 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:44:04,355 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:44:04,355 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:44:04,355 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:44:04,356 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:44:04,356 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:44:04,357 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 15:44:04,366 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:44:04,367 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:44:04,367 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 15:44:04,367 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 15:44:04,368 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 15:44:04,368 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 15:44:04,368 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 15:44:04,368 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 15:44:04,368 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 15:44:04,368 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 15:44:04,368 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 15:44:04,369 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 15:44:04,369 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 15:44:04,369 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:44:04,369 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 15:44:04,370 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 15:44:04,370 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 15:44:04,370 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:44:04,370 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 15:44:04,370 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 15:44:04,370 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 15:44:04,370 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 15:44:04,371 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 15:44:04,371 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:44:04,371 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 15:44:04,371 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:44:04,371 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:44:04,371 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 15:44:04,371 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 15:44:04,372 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 15:44:04,372 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:44:04,372 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 15:44:04,372 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 15:44:04,372 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 15:44:04,372 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 15:44:04,372 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 15:44:04,373 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 15:44:04,373 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c82214860fee184bc373305d606fd208dd65fd42 [2018-11-23 15:44:04,397 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:44:04,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:44:04,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:44:04,410 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:44:04,410 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:44:04,411 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float12_true-unreach-call_true-termination.i [2018-11-23 15:44:04,454 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/data/49ceb688b/35cb54ee0a3f4248b9dbfb99b010daf4/FLAG5d3e6c088 [2018-11-23 15:44:04,850 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:44:04,850 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/sv-benchmarks/c/floats-cbmc-regression/float12_true-unreach-call_true-termination.i [2018-11-23 15:44:04,854 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/data/49ceb688b/35cb54ee0a3f4248b9dbfb99b010daf4/FLAG5d3e6c088 [2018-11-23 15:44:04,862 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/data/49ceb688b/35cb54ee0a3f4248b9dbfb99b010daf4 [2018-11-23 15:44:04,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:44:04,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 15:44:04,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:44:04,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:44:04,868 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:44:04,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:44:04" (1/1) ... [2018-11-23 15:44:04,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc037f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:04, skipping insertion in model container [2018-11-23 15:44:04,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:44:04" (1/1) ... [2018-11-23 15:44:04,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:44:04,887 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:44:04,983 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:44:04,985 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:44:04,993 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:44:05,001 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:44:05,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05 WrapperNode [2018-11-23 15:44:05,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:44:05,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 15:44:05,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 15:44:05,002 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 15:44:05,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05" (1/1) ... [2018-11-23 15:44:05,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05" (1/1) ... [2018-11-23 15:44:05,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 15:44:05,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:44:05,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:44:05,019 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:44:05,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05" (1/1) ... [2018-11-23 15:44:05,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05" (1/1) ... [2018-11-23 15:44:05,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05" (1/1) ... [2018-11-23 15:44:05,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05" (1/1) ... [2018-11-23 15:44:05,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05" (1/1) ... [2018-11-23 15:44:05,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05" (1/1) ... [2018-11-23 15:44:05,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05" (1/1) ... [2018-11-23 15:44:05,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:44:05,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:44:05,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:44:05,035 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:44:05,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 15:44:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 15:44:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 15:44:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:44:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:44:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 15:44:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 15:44:05,194 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:44:05,194 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 15:44:05,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:44:05 BoogieIcfgContainer [2018-11-23 15:44:05,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:44:05,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 15:44:05,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 15:44:05,197 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 15:44:05,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:44:04" (1/3) ... [2018-11-23 15:44:05,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222d67ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:44:05, skipping insertion in model container [2018-11-23 15:44:05,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:05" (2/3) ... [2018-11-23 15:44:05,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222d67ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:44:05, skipping insertion in model container [2018-11-23 15:44:05,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:44:05" (3/3) ... [2018-11-23 15:44:05,200 INFO L112 eAbstractionObserver]: Analyzing ICFG float12_true-unreach-call_true-termination.i [2018-11-23 15:44:05,206 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 15:44:05,211 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 15:44:05,221 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 15:44:05,247 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 15:44:05,247 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 15:44:05,247 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 15:44:05,247 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:44:05,248 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:44:05,248 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 15:44:05,248 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:44:05,248 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 15:44:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-23 15:44:05,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-23 15:44:05,267 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:44:05,268 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:44:05,270 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:44:05,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:44:05,275 INFO L82 PathProgramCache]: Analyzing trace with hash -689330286, now seen corresponding path program 1 times [2018-11-23 15:44:05,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 15:44:05,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:44:05,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:44:05,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:44:05,316 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 15:44:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:44:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:44:05,345 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #21#return; [?] CALL call #t~ret2 := main(); [?] ~f~0 := #t~nondet0;havoc #t~nondet0;havoc ~d~0;~x~0 := #t~nondet1;havoc #t~nondet1;~d~0 := ~f~0; VAL [main_~d~0=0.0, main_~f~0=0.0, main_~x~0=1] [?] assume ~someBinaryFLOATComparisonOperation(~f~0, ~convertUCHARToFLOAT(~x~0)); VAL [main_~d~0=0.0, main_~f~0=0.0, main_~x~0=1] [?] assume !~someBinaryDOUBLEComparisonOperation(~d~0, ~convertUCHARToDOUBLE(~x~0)); VAL [main_~d~0=0.0, main_~f~0=0.0, main_~x~0=1] [?] assume !false; VAL [main_~d~0=0.0, main_~f~0=0.0, main_~x~0=1] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L6] ~f~0 := #t~nondet0; [L6] havoc #t~nondet0; [L7] havoc ~d~0; [L8] ~x~0 := #t~nondet1; [L8] havoc #t~nondet1; [L10] ~d~0 := ~f~0; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L12-L13] assume ~someBinaryFLOATComparisonOperation(~f~0, ~convertUCHARToFLOAT(~x~0)); VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] assume !~someBinaryDOUBLEComparisonOperation(~d~0, ~convertUCHARToDOUBLE(~x~0)); VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] assert false; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L6] ~f~0 := #t~nondet0; [L6] havoc #t~nondet0; [L7] havoc ~d~0; [L8] ~x~0 := #t~nondet1; [L8] havoc #t~nondet1; [L10] ~d~0 := ~f~0; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L12-L13] assume ~someBinaryFLOATComparisonOperation(~f~0, ~convertUCHARToFLOAT(~x~0)); VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] assume !~someBinaryDOUBLEComparisonOperation(~d~0, ~convertUCHARToDOUBLE(~x~0)); VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] assert false; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L6] ~f~0 := #t~nondet0; [L6] havoc #t~nondet0; [L7] havoc ~d~0; [L8] ~x~0 := #t~nondet1; [L8] havoc #t~nondet1; [L10] ~d~0 := ~f~0; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L12] COND TRUE ~someBinaryFLOATComparisonOperation(~f~0, ~convertUCHARToFLOAT(~x~0)) VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] COND TRUE !~someBinaryDOUBLEComparisonOperation(~d~0, ~convertUCHARToDOUBLE(~x~0)) VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] assert false; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L6] ~f~0 := #t~nondet0; [L6] havoc #t~nondet0; [L7] havoc ~d~0; [L8] ~x~0 := #t~nondet1; [L8] havoc #t~nondet1; [L10] ~d~0 := ~f~0; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L12] COND TRUE ~someBinaryFLOATComparisonOperation(~f~0, ~convertUCHARToFLOAT(~x~0)) VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] COND TRUE !~someBinaryDOUBLEComparisonOperation(~d~0, ~convertUCHARToDOUBLE(~x~0)) VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] assert false; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L6] ~f~0 := #t~nondet0; [L6] havoc #t~nondet0; [L7] havoc ~d~0; [L8] ~x~0 := #t~nondet1; [L8] havoc #t~nondet1; [L10] ~d~0 := ~f~0; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L12] COND TRUE ~someBinaryFLOATComparisonOperation(~f~0, ~convertUCHARToFLOAT(~x~0)) VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] COND TRUE !~someBinaryDOUBLEComparisonOperation(~d~0, ~convertUCHARToDOUBLE(~x~0)) VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] assert false; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret2 := main(); [L6] ~f~0 := #t~nondet0; [L6] havoc #t~nondet0; [L7] havoc ~d~0; [L8] ~x~0 := #t~nondet1; [L8] havoc #t~nondet1; [L10] ~d~0 := ~f~0; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L12] COND TRUE ~someBinaryFLOATComparisonOperation(~f~0, ~convertUCHARToFLOAT(~x~0)) VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] COND TRUE !~someBinaryDOUBLEComparisonOperation(~d~0, ~convertUCHARToDOUBLE(~x~0)) VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L13] assert false; VAL [~d~0=0.0, ~f~0=0.0, ~x~0=1] [L6] float f = __VERIFIER_nondet_float(); [L7] double d; [L8] unsigned char x = __VERIFIER_nondet_uchar(); [L10] d=f VAL [d=0, f=0, x=1] [L12] COND TRUE f==x VAL [d=0, f=0, x=1] [L13] COND TRUE !(d==x) VAL [d=0, f=0, x=1] [L13] __VERIFIER_error() VAL [d=0, f=0, x=1] ----- [2018-11-23 15:44:05,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:44:05 BoogieIcfgContainer [2018-11-23 15:44:05,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 15:44:05,365 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:44:05,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:44:05,365 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:44:05,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:44:05" (3/4) ... [2018-11-23 15:44:05,368 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 15:44:05,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:44:05,369 INFO L168 Benchmark]: Toolchain (without parser) took 504.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:44:05,370 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:44:05,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.67 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:44:05,371 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.92 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:44:05,372 INFO L168 Benchmark]: Boogie Preprocessor took 15.28 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:44:05,372 INFO L168 Benchmark]: RCFGBuilder took 160.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -208.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 15:44:05,372 INFO L168 Benchmark]: TraceAbstraction took 169.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 11.5 GB. [2018-11-23 15:44:05,373 INFO L168 Benchmark]: Witness Printer took 3.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:44:05,375 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.67 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.92 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.28 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 160.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -208.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 169.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryDOUBLEComparisonOperation at line 13. Possible FailurePath: [L6] float f = __VERIFIER_nondet_float(); [L7] double d; [L8] unsigned char x = __VERIFIER_nondet_uchar(); [L10] d=f VAL [d=0, f=0, x=1] [L12] COND TRUE f==x VAL [d=0, f=0, x=1] [L13] COND TRUE !(d==x) VAL [d=0, f=0, x=1] [L13] __VERIFIER_error() VAL [d=0, f=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-aa41828 [2018-11-23 15:44:06,766 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:44:06,767 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:44:06,775 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:44:06,775 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:44:06,776 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:44:06,776 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:44:06,777 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:44:06,778 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:44:06,779 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:44:06,780 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:44:06,780 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:44:06,780 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:44:06,781 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:44:06,782 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:44:06,783 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:44:06,783 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:44:06,785 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:44:06,786 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:44:06,787 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:44:06,788 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:44:06,789 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:44:06,790 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:44:06,790 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:44:06,791 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:44:06,791 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:44:06,792 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:44:06,792 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:44:06,793 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:44:06,794 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:44:06,794 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:44:06,794 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:44:06,794 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:44:06,794 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:44:06,795 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:44:06,796 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:44:06,796 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-23 15:44:06,806 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:44:06,807 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:44:06,807 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 15:44:06,807 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 15:44:06,808 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 15:44:06,808 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 15:44:06,808 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 15:44:06,808 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 15:44:06,808 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 15:44:06,808 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 15:44:06,809 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:44:06,809 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 15:44:06,809 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 15:44:06,809 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:44:06,809 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 15:44:06,809 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 15:44:06,809 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 15:44:06,810 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 15:44:06,810 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 15:44:06,810 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 15:44:06,810 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 15:44:06,810 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:44:06,810 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 15:44:06,811 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:44:06,811 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:44:06,811 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 15:44:06,811 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 15:44:06,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 15:44:06,811 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:44:06,811 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 15:44:06,811 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 15:44:06,812 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-23 15:44:06,812 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 15:44:06,812 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 15:44:06,812 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 15:44:06,812 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c82214860fee184bc373305d606fd208dd65fd42 [2018-11-23 15:44:06,841 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:44:06,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:44:06,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:44:06,852 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:44:06,853 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:44:06,853 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float12_true-unreach-call_true-termination.i [2018-11-23 15:44:06,891 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/data/74deac98f/69ef14d1dd3246b982846a9deafa0253/FLAG9f2337526 [2018-11-23 15:44:07,279 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:44:07,279 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/sv-benchmarks/c/floats-cbmc-regression/float12_true-unreach-call_true-termination.i [2018-11-23 15:44:07,283 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/data/74deac98f/69ef14d1dd3246b982846a9deafa0253/FLAG9f2337526 [2018-11-23 15:44:07,291 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/data/74deac98f/69ef14d1dd3246b982846a9deafa0253 [2018-11-23 15:44:07,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:44:07,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 15:44:07,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:44:07,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:44:07,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:44:07,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:44:07" (1/1) ... [2018-11-23 15:44:07,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b7d10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07, skipping insertion in model container [2018-11-23 15:44:07,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:44:07" (1/1) ... [2018-11-23 15:44:07,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:44:07,317 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:44:07,418 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:44:07,422 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:44:07,432 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:44:07,441 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:44:07,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07 WrapperNode [2018-11-23 15:44:07,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:44:07,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 15:44:07,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 15:44:07,442 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 15:44:07,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07" (1/1) ... [2018-11-23 15:44:07,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07" (1/1) ... [2018-11-23 15:44:07,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 15:44:07,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:44:07,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:44:07,455 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:44:07,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07" (1/1) ... [2018-11-23 15:44:07,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07" (1/1) ... [2018-11-23 15:44:07,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07" (1/1) ... [2018-11-23 15:44:07,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07" (1/1) ... [2018-11-23 15:44:07,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07" (1/1) ... [2018-11-23 15:44:07,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07" (1/1) ... [2018-11-23 15:44:07,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07" (1/1) ... [2018-11-23 15:44:07,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:44:07,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:44:07,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:44:07,470 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:44:07,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 15:44:07,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 15:44:07,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 15:44:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:44:07,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:44:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 15:44:07,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 15:44:07,728 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:44:07,728 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 15:44:07,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:44:07 BoogieIcfgContainer [2018-11-23 15:44:07,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:44:07,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 15:44:07,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 15:44:07,731 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 15:44:07,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:44:07" (1/3) ... [2018-11-23 15:44:07,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109e1a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:44:07, skipping insertion in model container [2018-11-23 15:44:07,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:44:07" (2/3) ... [2018-11-23 15:44:07,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109e1a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:44:07, skipping insertion in model container [2018-11-23 15:44:07,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:44:07" (3/3) ... [2018-11-23 15:44:07,733 INFO L112 eAbstractionObserver]: Analyzing ICFG float12_true-unreach-call_true-termination.i [2018-11-23 15:44:07,739 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 15:44:07,743 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 15:44:07,752 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 15:44:07,769 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 15:44:07,769 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 15:44:07,769 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 15:44:07,769 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 15:44:07,769 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:44:07,769 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:44:07,770 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 15:44:07,770 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:44:07,770 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 15:44:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-23 15:44:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-23 15:44:07,787 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:44:07,787 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:44:07,789 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:44:07,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:44:07,792 INFO L82 PathProgramCache]: Analyzing trace with hash -689330286, now seen corresponding path program 1 times [2018-11-23 15:44:07,794 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 15:44:07,795 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-23 15:44:07,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:44:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:44:07,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:44:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:44:09,518 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 15:44:09,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:44:09,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 15:44:09,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 15:44:09,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 15:44:09,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:44:09,538 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-11-23 15:44:12,126 WARN L180 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-23 15:44:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:44:12,600 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-23 15:44:12,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 15:44:12,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-23 15:44:12,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:44:12,615 INFO L225 Difference]: With dead ends: 19 [2018-11-23 15:44:12,616 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 15:44:12,617 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 15:44:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 15:44:12,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 15:44:12,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 15:44:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 15:44:12,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-11-23 15:44:12,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:44:12,636 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:44:12,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 15:44:12,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:44:12,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 15:44:12,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 15:44:12,668 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 15:44:12,669 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:44:12,669 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:44:12,669 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 15:44:12,669 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 15:44:12,669 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 15:44:12,669 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 4 14) the Hoare annotation is: true [2018-11-23 15:44:12,670 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 4 14) no Hoare annotation was computed. [2018-11-23 15:44:12,670 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2018-11-23 15:44:12,670 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-23 15:44:12,670 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2018-11-23 15:44:12,670 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-23 15:44:12,670 INFO L448 ceAbstractionStarter]: For program point L12-1(lines 4 14) no Hoare annotation was computed. [2018-11-23 15:44:12,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:44:12 BoogieIcfgContainer [2018-11-23 15:44:12,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 15:44:12,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:44:12,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:44:12,674 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:44:12,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:44:07" (3/4) ... [2018-11-23 15:44:12,677 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 15:44:12,683 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 15:44:12,684 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 15:44:12,686 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-23 15:44:12,687 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 15:44:12,687 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 15:44:12,712 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_530c47c9-447e-41be-be8b-4e9a02d89e1e/bin-2019/utaipan/witness.graphml [2018-11-23 15:44:12,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:44:12,713 INFO L168 Benchmark]: Toolchain (without parser) took 5419.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 950.5 MB in the beginning and 1.1 GB in the end (delta: -152.0 MB). Peak memory consumption was 593.9 kB. Max. memory is 11.5 GB. [2018-11-23 15:44:12,713 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:44:12,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.45 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:44:12,714 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.42 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:44:12,714 INFO L168 Benchmark]: Boogie Preprocessor took 14.46 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 15:44:12,715 INFO L168 Benchmark]: RCFGBuilder took 258.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -203.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-23 15:44:12,715 INFO L168 Benchmark]: TraceAbstraction took 4943.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 11.5 GB. [2018-11-23 15:44:12,715 INFO L168 Benchmark]: Witness Printer took 39.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:44:12,717 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.45 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.42 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.46 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 258.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -203.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4943.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 11.5 GB. * Witness Printer took 39.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 4.9s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 6 SDslu, 15 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 1 QuantifiedInterpolants, 154 SizeOfPredicates, 3 NumberOfNonLiveVariables, 16 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...